Question

HELP The ancient chordates are thought to be most closely related to echinoderms because the embryos of chordates and echinoderms are

Answer 1

: a notochord, a dorsal hollow nerve chord, and pharyngeal gill slits

Answer 2

@kilheart is that the whole answer? :)

Answer 3

getting more ^^

Answer 4

@kilheart okay cool, thanks man.

Answer 5

this is what I found don't know if it will help.... Echinoderms and chordates both belong to the Deuterostomia clade. They share developmental similarities and are closely related according to molecular evidence. The clade is defined by DNA evidence, not by similarities in development.

Answer 6

tunicates (urochordates) are "basal deuterostomes," surviving members of the group from which echinoderms, hemichordates, and chordates evolved. Some researchers believe that, within the chordates, craniates are most closely related to cephalochordates, but there are also reasons for regarding tunicates (urochordates) as craniates' closest relatives. One other phylum, Xenoturbellida, appears to be basal within the deuterostomes, closer to the original deuterostomes than to the chordates, echinoderms and hemichordates

Answer 7

https://www.boundless.com/biology/lower-animals/echinoderms-and-chordates/echinoderms-and-chordates-are-related/

Answer 8

@kilheart @jordanrochelleburgett thank you guys so much! ;)